Odpowiedź i wyjaśnienie:
Podstawą jest trapez prostokątny, więc:
Pp = (a + b)/2 * h
Pp= (3 + 9)/2 * 8 = 12/2 * 8 = 6 * 8 = 48 cm ².
Pole boczne to cztery prostokąty.
P1 = 8 cm * 5 cm = 40 cm²
P2 = 9 cm * 5 cm = 45 cm²
P3 = 10 cm * 5 cm = 50 cm²
P4 = 3 cm * 5 cm = 15 cm ²
Pb = 40 cm ² + 45 cm ² + 50 cm ² + 15 cm ² = 150 cm².
Pc = 2 * Pp + Pb
Pc = 2 * 48 cm² + 150 cm² = 96 cm² + 150 cm² = 246 cm²
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Odpowiedź i wyjaśnienie:
Podstawą jest trapez prostokątny, więc:
Pp = (a + b)/2 * h
Pp= (3 + 9)/2 * 8 = 12/2 * 8 = 6 * 8 = 48 cm ².
Pole boczne to cztery prostokąty.
P1 = 8 cm * 5 cm = 40 cm²
P2 = 9 cm * 5 cm = 45 cm²
P3 = 10 cm * 5 cm = 50 cm²
P4 = 3 cm * 5 cm = 15 cm ²
Pb = 40 cm ² + 45 cm ² + 50 cm ² + 15 cm ² = 150 cm².
Pc = 2 * Pp + Pb
Pc = 2 * 48 cm² + 150 cm² = 96 cm² + 150 cm² = 246 cm²